SLC → SEA: cancellations & delays
Over Jan 2023 - Apr 2026, 0.8% of Salt Lake City International Airport (SLC) to Seattle–Tacoma International Airport (SEA) flights were cancelled and 18.7% arrived at least 15 minutes late, across 13,024 flights, flown by DL, AS, OO, F9. Cancellations peak in March.
Check today's live SLC departures →Airport pages: Salt Lake City International Airport (SLC) · Seattle–Tacoma International Airport (SEA)
Rates are historical averages from U.S. DOT (BTS) on-time records; a specific flight's live estimate can differ with weather and the day's disruptions.